PDA

View Full Version : slot port build



mat3833
06-22-2009, 05:44 PM
ok, so im selling my JL to a friend and he wants a box made for it. i have the skills to make a box(ex-carpenter/Framer) but i dont have the skills to design one. he doesnt want anything special, just a slot port box tuned to about 30Hz. he wants an upfire configuration, with a max height of 12 inches and max depth of 15 inches. the rest doesnt mater. can you guys help me out??

i dont even kno where to start making measurements or subtracting what from what....

Matt

mat3833
06-22-2009, 05:55 PM
also, JL lists the space requirements at 1.125 cubic feet when tuned to 30Hz

Matt

cshaw
06-22-2009, 06:02 PM
look in the build section to get some ideas of how it goes. maybe just use the re calculator. http://reaudio.com/speaker_box/LPort_Box_Calc.html

mat3833
06-22-2009, 07:08 PM
re-calculater?? lol, ill google it.

Matt

406er
06-23-2009, 12:45 AM
hey posted the link dude, just click it

mat3833
06-23-2009, 01:17 AM
ok, how important is it to keep within the space requirements and tuning specified by JL? i cant seem to get a combination of LxWxH that works to get the space right and also allows me to tune it to 30Hz as JL suggests without going to a .5 inch port width....

Matt

DonH
06-23-2009, 01:31 AM
ok so a box thats ~1.25ft^3 your gona want ~ 20"^2 of port area... lmk if you need some help with a design bro... also check the free design thread... calculations somewhat off but not to bad. also look in to aero ports :) one 4" will be enough

mat3833
06-23-2009, 01:53 AM
ummmm, aero port?? no clue what that is, unless u mean round port. and if thats the case, no go. he wants it a slot port. im having trouble with the whole upfire deal. idk, maby ill just tell him to make his own box. lol, i do want to make it tho that way when i go to make a box for the new subs ill already kno what im doing.

can you PM me and walk me through the whole port calculation deal and displacment and such?

Matt

cshaw
06-24-2009, 10:53 AM
heres a good walk through for ya

http://www.caraudio.com/forum/showthread.php?t=388838